Lu Xirui, Shu Xiaoyan, Chen Shunzhang, Zhang Kuibao, Chi Fangtin, Zhang Haibin, Shao Dadong, Mao Xueli
Fundamental Science on Nuclear Wastes and Environmental Safety Laboratory, Southwest University of Science and Technology, Mianyang, Sichuan, 621010, PR China.
Fundamental Science on Nuclear Wastes and Environmental Safety Laboratory, Southwest University of Science and Technology, Mianyang, Sichuan, 621010, PR China.
J Hazard Mater. 2018 Sep 5;357:424-430. doi: 10.1016/j.jhazmat.2018.06.026. Epub 2018 Jun 12.
In this research, the heavy-ion irradiation effects of U-bearing GdZrO ceramics were explored for nuclear waste immobilization. UO was designed to be incorporated into GdZrO from two different routes in the form of (GdU)(ZrU)O (x = 0.1, 0.14). The self-irradiation of actinide nuclides was simulated by Xe heavy-ion radiation under different fluences. Grazing incidence X-ray diffraction (GIXRD) analysis reveals the relationship between radiation dose, damage and depth. The radiation tolerance is promoted with the increment of UO content in the discussed range. Raman spectroscopy testifies the enhancement of radiation tolerance and microscopically existed phase evolution from the chemical bond vibrations. In addition, the microstructure and elemental distribution of the irradiated samples were analyzed as well. The amorphization degree of the sample surface declines as the U content was elevated from x = 0.1 to x = 0.14.
在本研究中，探索了含铀钆锆酸盐陶瓷的重离子辐照效应，以用于核废料固化。设计通过两种不同途径将UO以(GdU)(ZrU)O（x = 0.1, 0.14）的形式掺入钆锆酸盐中。通过不同注量的Xe重离子辐射模拟锕系核素的自辐照。掠入射X射线衍射（GIXRD）分析揭示了辐射剂量、损伤与深度之间的关系。在所讨论的范围内，随着UO含量的增加，辐射耐受性增强。拉曼光谱从化学键振动方面证实了辐射耐受性的增强以及微观上存在的相演变。此外，还分析了辐照样品的微观结构和元素分布。当U含量从x = 0.1升高到x = 0.14时，样品表面的非晶化程度降低。
